1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 1997-2016 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 #include <stdio.h> 19 #include <unistd.h> 20 21 #include <limits.h> 22 #include <string.h> 23 24 int 25 main (int argc, char ** argv) 26 { 27 int pid; 28 29 /* A statement before vfork to make sure a breakpoint on main isn't 30 set on vfork below. */ 31 pid = 1 + argc; 32 pid = vfork (); /* VFORK */ 33 if (pid == 0) { 34 char prog[PATH_MAX]; 35 int len; 36 37 strcpy (prog, argv[0]); 38 len = strlen (prog); 39 /* Replace "foll-vfork" with "vforked-prog". */ 40 memcpy (prog + len - 10, "vforked-prog", 12); 41 prog[len + 2] = 0; 42 43 printf ("I'm the child!\n"); 44 execlp (prog, prog, (char *) 0); 45 perror ("exec failed"); 46 _exit (1); 47 } 48 else { 49 printf ("I'm the proud parent of child #%d!\n", pid); 50 } 51 } 52